Question

When 90.0mL of 0.10 M Fe3+ is added to 10.0mLof
an SCN- solution, the equilibrium molar concentrationof
FeNCS2+, as determined from a calibration curve,
is1.0x10-6 mol/L. Using the value
of(Kc=25x103), determine the equilibrium
molarconcentration of SCN- in the system.